In spite of the great difficulties, Helen Keller studying and finally succeeded.
A. stuck to
B. kept up with
C. kept on
D. insisted on
网友回答
A. stuck to
B. kept up with
(答案→)C. kept on
D. insisted on
解析：短语辨析。A. 坚持 B.跟上 C.继续 D.连续。句意：尽管有很大困难，海伦.开了继续他的学习，最后成功了。故选C.